用websocket建立远程连接（vue）

一。用引入js方式

1 在main.js中引入

//引入websocket

import '@/assets/js/sockjs.min.js';

import '@/assets/js/stomp.min.js';

2 在代码里书写

//与服务器建立==>监听是否被扫

scanConnect(){

this.refreshConnect();

var socket = new SockJS('http://118.178.118.114/zjzwfw-zwmp-api/endpoint-websocket');

this.stompClient = Stomp.over(socket);

var _self=this;

_self.stompClient.connect({'token':sessionStorage.getItem('token')}, function (frame) {

console.log(11, _self.stompClient);

});

//取消与服务器端的链接

disconnect(){

if (this.stompClient != null) {

this.stompClient.disconnect();

console.log("Disconnected",this.stompClient);

}

二。用npm构建

// 安装命令行: npm install sockjs-client 和npm install @stomp/stompjs

// 安装并引入相关模块
import SockJS from 'sockjs-client'; 
import Stomp from 'stompjs';
export default {
 data() {
  return {
  dataList: []
  };
 },
 mounted:function(){
  this.initWebSocket();
 },
 beforeDestroy: function () {
  // 页面离开时断开连接,清除定时器
  this.disconnect();
  clearInterval(this.timer);
 },
 methods: {
  initWebSocket() {
  this.connection();
  let self = this;
  // 断开重连机制,尝试发送消息,捕获异常发生时重连
  this.timer = setInterval(() => {
   try {
   self.stompClient.send("test");
   } catch (err) {
   console.log("断线了: " + err);
   self.connection();
   }
  }, 5000);
  },
  removeTab(targetName) {
  console.log(targetName)
  },
  connection() {
  // 建立连接对象
  this.socket = new SockJS('http://xxxxxx:8089/ws');//连接服务端提供的通信接口，连接以后才可以订阅广播消息和个人消息
  // 获取STOMP子协议的客户端对象
  this.stompClient = Stomp.over(this.socket);
  // 定义客户端的认证信息,按需求配置
  var headers = {
   login: 'mylogin',
   passcode: 'mypasscode',
   // additional header
   'client-id': 'my-client-id'
  };
  // 向服务器发起websocket连接
  this.stompClient.connect(headers,(frame) => {
   this.stompClient.subscribe('/topic/chat_msg', (msg) => { // 订阅服务端提供的某个topic
   consolel.log(msg.body); // msg.body存放的是服务端发送给我们的信息
   });
  }, (err) => {
    
  });
 
  },
  disconnect() {
  if (this.stompClient != null) {
   this.stompClient.disconnect();
   console.log("Disconnected");
  }
  }
 }
};